I finally got me Ian's Über2next around half a year ago, and I wouldn't wanna miss it

! The stock gimbals with the stock stiff springs simply are way to hard to allow for any fine control whatsoever

, and even though I've used them ever since I got my kitten (around a quartal before it officially hit the shelves

), the difference makes
the difference, IMHO.
It took me a while to get used to the different feeling, like the unused wobbling around the center due to over controlling due to having been used to applying brute force to the stock gimbals for so long. But I won't go back, no THX!
Mind, IMHO even a Cougar with whatever modded gimbals and custom springs doesn't come close to the feeling of my good old F-16 FLCS - but Ian's Über2next mod definitively is the best choice for WWII sims, IMHO! It's not really cheap

, that's true - but worth the investment

, you know: it's the best you can make your Cougar, IMHO.